mercurial/bdiff.h

repair: move manifest strip to a separate function

This moves manifest stripping to a separate function so implementations of the
manifest that don't support stripping can replace this function with a no-op.

I considered adding a strip api to the manifestlog, so other implementations
could make it a no-op there, but it seems like strip might be unique to the
revlog implementation, and therefore shouldn't be present on the generic api.

Differential Revision: https://phab.mercurial-scm.org/D292

#ifndef _HG_BDIFF_H_
#define _HG_BDIFF_H_

struct bdiff_line {
	int hash, n, e;
	ssize_t len;
	const char *l;
};

struct bdiff_hunk;
struct bdiff_hunk {
	int a1, a2, b1, b2;
	struct bdiff_hunk *next;
};

int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr);
int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn,
	struct bdiff_hunk *base);
void bdiff_freehunks(struct bdiff_hunk *l);

#endif